Heavy Metal was an American science fiction and fantasy comics magazine, known primarily for its blend of dark fantasy/science fiction and erotica. In the mid-1970s, publisher Leonard Mogel discovered the French science-fantasy magazine Métal Hurlant. Initially, Heavy Metal displayed translations of graphic stories originally published in Métal Hurlant, including work by Enki Bilal, Philippe Caza, Guido Crepax, Philippe Druillet, Jean-Claude Forest, Jean Giraud (aka Moebius) and Milo Manara. The magazine later ran Stefano Tamburini and TaninoHeavy Metal's high-quality artwork is notable. Work by international artists such as H. R. Giger and Esteban Maroto have been featured on covers. Many stories were presented as long-running serials, such as those by Richard Corben, Pepe Moreno and Matt Howarth.